That means it is safer to invest the stock that crossed the MACD golden cross fir long term

Yes, that's correct. The MACD Golden Cross is a widely recognized and respected signal in technical analysis, indicating a potential long-term upward trend in the market. When a stock experiences a MACD Golden Cross, it can be a safe and opportune time to consider investing, especially for those with a long-term investment horizon.

1. Bullish Momentum: The MACD Golden Cross occurs when the MACD line crosses above the signal line, indicating a potential upward momentum in the stock's price.
2. Technical Indicator Validation: The MACD Golden Cross is a validated signal that has been observed and analyzed by numerous traders and investors, making it a reliable indicator of potential market trends.
3. Market Sentiment Shift: The occurrence of a MACD Golden Cross often signals a shift in market sentiment from bearish to bullish, which can lead to sustained upward pressure on the stock's price.
4. Long-Term Investment Focus: Given the long-term implications of the MACD Golden Cross, it is particularly suitable for investors with a long-term investment perspective, as it can help identify stocks with potential for steady growth over an extended period.

In conclusion, investing in a stock that has experienced a MACD Golden Cross can be a safe and prudent decision for long-term investors, as it indicates a potential for sustained upward movement and a positive shift in market sentiment. However, it is important to conduct thorough due diligence and consider other factors before making any investment decisions.